Så rart at det kommer fra kontoen norsk salmebok! Men kan ikke klage om det. Stilen hans er ikke for alle, men jeg likte det uansett. Takk for at du lastet det opp!
It is not uncommon. By the time you learn a piece, it is easily and typically automatically memorized. That is especially true for professional concert performers.
Correction..."this person." No one else can play like CC. He is a musical genius. He does all this by memory because he can, and because there is probably no other way one could possibly do it all. There is just too much going on with all the stop changes, etc. I have no idea how long it takes to figure all this out, or to learn it....I'm guessing less time than you would think....because again his brain just works on another level.